公开(公告)号：US11810586B2

公开(公告)日：2023-11-07

申请号：US17394669

申请日：2021-08-05

Applicant: LINE Plus Corporation

Inventor： Ki Jun Kim ,  JongHewk Park

IPC: G10L21/0224 ,  G10L21/0232 ,  G06N3/08 ,  G10L25/30 ,  G06N3/04 ,  G06N3/045

CPC classification number: G10L21/0224 ,  G06N3/045 ,  G06N3/08 ,  G10L21/0232 ,  G10L25/30

Abstract: A noise cancellation method including generating a first voice signal by canceling a first portion of noise included in an input voice signal using a first network, the first network being a trained u-net structure, and the first portion of the noise being in a time domain, applying a first window to the first voice signal, performing a fast Fourier transform on the first windowed voice signal to acquire a magnitude signal and a phase signal, acquiring a mask using a second network based on the magnitude signal, the second network being another trained u-net structure, applying the mask to the magnitude signal, generating a second voice signal by canceling a second portion of the noise by performing an inverse fast Fourier transform on the first windowed voice signal based on the masked magnitude signal and the phase signal, and applying a second window to the second voice signal.